This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED20X25, the same code under the new prefix. The ACE replacement is a current-production ISO 21287 compact cylinder in the same bore, stroke and force class, with a matching short body and the same mounting-accessory family, so it fits the same envelope. Confirm mounting-interface dimensions against the ACE datasheet before ordering.

The AirTAC ACPD Double Rod Compact Cylinder ACPD20X25 is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø20mm bore and 25mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED20X25 (ISO 21287 ACE), in the same bore, stroke and force class.
This is a double acting compact cylinder with a rod leaving both covers, so the 20 mm bore delivers the same 117.8 N at 0.5 MPa in each direction because both strokes work on the rod-side area. The through-rod resists rotation and side load and gives a symmetric mount, and the rear rod can carry a sensor flag. The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it fits tight jigs and guarding. Note the fixed TPU bumper at each end simply decelerates the piston; it never holds a load.
This ACPD20X25 is discontinued. The current-production direct is ACED20X25 - swap the P for an E - in the same bore, stroke and force class, so confirm the ISO 21287 mounting dimensions before you swap. The optional -S magnet code enables CMSE / DMSE switches; without -S there is no magnet fitted.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD20X25 |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED20X25 |
| Bore size | Ø20 mm |
| Stroke | 25 mm |
| Acting type | Double acting, double rod |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed bumper (both ends) |
| Max standard stroke | Up to 100 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACED20X25 (ISO 21287) carries the same bore/stroke/force class; confirm mounting-interface dimensions against the ACE datasheet before installation. Rod type: female thread (blank) or male thread (B). Thread options: PT (blank) / G.
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 118 N |
| 0.7 MPa | 165 N |
| Max (@1.0 MPa) | 24 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
| ACPD | DIN compact cylinder (double-rod, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| S | Optional built-in magnet for sensor position sensing (omit for no magnet). |
| B | Rod type: B = male thread; blank = female thread. |
Replacement mapping (swap P for E): ACP→ACE, ASP→ASE, ATP→ATE, ACPD→ACED, ACPJ→ACEJ. ACP-family: ACP (double acting), ASP / ATP (single acting push / pull), ACPD (double rod), ACPJ (double rod, adjustable stroke).
The 25 mm stroke and 117.8 N per direction suit a swing-arm clamp on a CNC jig, with the through-rod keeping the clamp platen square under side load.
A compact analyzer tray needs a short push of about 6 kg vertical equivalent; the double rod gives symmetric mounting inside a tight enclosure.
Kicking an off-spec 5 kg bottle sideways at a sorter needs roughly 70 N of usable force, which this bore delivers at 0.5 MPa in both directions.
At 25 mm stroke this sits well inside the 100 mm maximum standard stroke for the 20 mm bore, so it is a catalog item, not a made-to-order build. If 117.8 N per direction is marginal, step up to bore 25 for 206.2 N at 0.5 MPa; if the load is light, bore 16 gives 75.4 N in a smaller envelope. Choose the FA/FB flange or LB foot to match your fixture, and order the -S code if you need CMSE / DMSE position switches. For replacement, specify ACED20X25 and verify the ISO 21287 mounting dimensions.
Replacement checklist
Yes - the double-rod design means both strokes use the rod-side area, so force is equal in each direction: 117.8 N at 0.5 MPa, 164.9 N at 0.7 MPa, and a maximum of 24.0 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure, speed 30-500 mm/s, and the rod thread is female M6x1.0 with an M5x0.8 port.
Order ACED20X25, the ISO 21287 successor made by swapping the P for an E. It matches the same 20 mm bore, 25 mm stroke and force class, but confirm the ISO 21287 mounting dimensions before swapping because the ACP series was built to a DIN-standard footprint. The optional -S magnet code carries over if you run CMSE / DMSE switches.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED20X25 replacement — usually within 7-8 hours.